Rewelding Repair Effects on Fatigue Cracks in Steel Bridge Deck Welds

The modern steel orthotropic decks have been used in steel bridges for 60 years all over the world because of its super structural advantages. Recently, more bridge owners, engineers and researchers pay more attention to the fatigue problem of orthotropic steel decks for a large number of fatigue cracks found in steel bridges. For example, bridge engineers have detected hundreds of fatigue cracks in steel orthotropic deck on the 888-meter long box girder of Humen Bridge only ten years after opening to traffic. How to design or repair the fatigue details in orthotropic steel decks is the critical question to be solved at first step. In current paper, the elaborate numerical analysis model of the orthotropic steel bridge decks was developed using ANSYS software with different floor-beam web cutouts shapes, such as conventional ellipse, circular, trapezoid and Haibach web cutouts. The finite element models were calibrated by static test of one full size orthotropic steel bridge deck model. According to the analysis results, it should select the rational cutout shapes based on actual load and structural conditions in steel bridge deck design and strengthening.

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Finite Element Analysis on Mechanical Behavior of Orthotropic Steel Bridge Deck in Balinghe Bridge

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.639-640.239 ◽

2013 ◽

Vol 639-640 ◽

pp. 239-242

Author(s):

Jian Hua Cheng ◽

Jian Min Xiong ◽

Jin Zhi Zhou

Keyword(s):

Mechanical Behavior ◽

Bridge Deck ◽

Fatigue Cracks ◽

Steel Bridge ◽

Bridge Structure ◽

Future Health ◽

Wheel Load ◽

Element Analysis ◽

Box Girder ◽

Orthotropic Steel Bridge Deck

Orthotropic plate participates in bridge structure as a part of steel box girder, while in Balinghe Bridge it is used as bridge deck directly to endure the wheel load [1]. In this paper it’s studied systematically the mechanical behavior of orthotropic steel bridge deck in combination with the deck model of Balinghe Bridge, and shows the positions emerging fatigue cracks to provide the basis for future health monitoring and put forward some suggestions.

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Proactive maintenance method for fatigue cracks to steel bridge deck without traffic disruption

IABSE Congress, New York, New York 2019: The Evolving Metropolis ◽

10.2749/newyork.2019.2745 ◽

2019 ◽

Author(s):

Ryo Nakata ◽

Yukio Adachi

Keyword(s):

Fatigue Damage ◽

Fatigue Resistance ◽

Bridge Deck ◽

Fatigue Cracks ◽

New Method ◽

Steel Bridge ◽

Traffic Demand ◽

Deck Plate ◽

Steel Deck ◽

Proactive Maintenance

Fatigue damage is a major topic in bridge maintenance. The fatigue damage to steel bridge deck has been dramatically increasing since the first fatigue damage was observed in Hanshin expressway in early 2000s. Insufficient knowledge of bridge fatigue design and unexpected increase of traffic demand and heavy vehicle could be the cause of the fatigue damage.Replacement of base pavement course to steel fiber reinforced concrete (SFRC) has been generally used for strengthening of steel decks; however, the countermeasure from the topside of the bridge deck could make serious traffic disruption. Therefore, reactive and proactive maintenance for such steel decks has not been well progressed so far.According to the background above, Hanshin expressway has been making an effort on developing new method by strengthening steel deck from the bottom side. The idea of the new method is to enhance fatigue resistance by improving the weld joint between deck plate and U-rib plate. Three potential methods were identified and the effectiveness of those methods was studied in field for making sure of not only fatigue resistance improvement but also field construction.This paper will introduce the new retrofit methods for steel deck and describe the effectiveness of those methods.

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Analysis on Stop-hole Parameters for Fatigue Cracks at Arc Notch in Steel Bridge Deck

Journal of Physics Conference Series ◽

10.1088/1742-6596/2148/1/012036 ◽

2022 ◽

Vol 2148 (1) ◽

pp. 012036

Author(s):

Liangping Feng ◽

Lipeng Ling ◽

Cheng Meng ◽

Bohai Ji

Keyword(s):

Stress Concentration ◽

Maximum Stress ◽

Bridge Deck ◽

Fatigue Cracks ◽

Crack Tip ◽

Hole Diameter ◽

Finite Element Models ◽

Steel Bridge ◽

Stress Point ◽

Different Diameters

Abstract Two types of fatigue cracks at arc notch in steel bridge deck were repaired by drilling stop-holes. The effect of stop-holes with different diameters and positions was considered. Based on finite element models, the variation laws of stress distribution and the effects of stress concentration were compared for different stop-hole diameters and positions. Analysis results indicated that stop-hole can effectively improve the stress concentration at crack tip and the fatigue life of components can be considerably increased. The crack-stopping performance enhances with the increase of stop-hole diameter, but large stop-hole cannot effectively retard crack growth. The stop-hole performs well with the location at -0.5D∼0.5D. The maximum stress point still appears at crack tip when the stop-hole is outside or inside the crack. The stop-hole diameter has no effect on the stop-hole location.

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Developing cold-mixed epoxy resin-based ultra-thin antiskid surface layer for steel bridge deck pavement

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.123366 ◽

2021 ◽

Vol 291 ◽

pp. 123366

Author(s):

Yang Liu ◽

Zhendong Qian ◽

Xijun Shi ◽

Yuheng Zhang ◽

Haisheng Ren

Keyword(s):

Surface Layer ◽

Epoxy Resin ◽

Bridge Deck ◽

Steel Bridge ◽

Bridge Deck Pavement

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A Comprehensive Life-Cycle Cost Analysis Approach Developed for Steel Bridge Deck Pavement Schemes

Coatings ◽

10.3390/coatings11050565 ◽

2021 ◽

Vol 11 (5) ◽

pp. 565

Author(s):

Changbo Liu ◽

Zhendong Qian ◽

Yang Liao ◽

Haisheng Ren

Keyword(s):

Life Cycle ◽

Life Cycle Cost ◽

Bridge Deck ◽

Analysis Approach ◽

Steel Bridge ◽

User Cost ◽

Construction Quality ◽

Concrete System ◽

Traffic Conditions ◽

Bridge Deck Pavement

This study aims to evaluate the economy of a steel bridge deck pavement scheme (SBDPS) using a comprehensive life-cycle cost (LCC) analysis approach. The SBDPS are divided into the “epoxy asphalt concrete system”(EA system) and“ Gussasphalt concrete system”(GA system) according to the difference in the material in the lower layer of the SBDPS. A targeted LCC checklist, including manager cost and user cost was proposed, and a Markov-based approach was applied to establish a life-cycle performance model with clear probability characteristics for SBDPS. Representative traffic conditions were designed using a uniform design method, and the LCC of SBDPS under representative traffic conditions and different credibility (construction quality as a random factor) was compared. The reliability of the LCC analysis approach was verified based on the uncertainty analysis method. Based on an expert-scoring approach, a user cost weight was obtained to ensure it is considered reasonably in the LCC analysis. Compared with the cumulative traffic volume, the cumulative equivalent single axle loads (CESAL) have a closer relationship with the LCC. The GA system has better LCC when the CESAL is less, while the EA system is just the opposite. The breaking point of CESAL for the LCC of the EA system and the GA system is 15 million times. The LCC analysis of SBDPS should consider the influence of random factors such as construction quality. The comprehensive LCC analysis approach in this paper can provide suggestions for bridge-management departments to make a reasonable selection on SBDPS.

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Dynamic Response of the Steel Bridge Deck Thin Surfacing due to Vehicle Load

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.156-157.677 ◽

2010 ◽

Vol 156-157 ◽

pp. 677-677

Keyword(s):

Dynamic Response ◽

Bridge Deck ◽

Advanced Materials ◽

Steel Bridge ◽

Vehicle Load ◽

Materials Research

This paper has been published in Advanced Materials Research Volumes 148 - 149, pp 544 http://www.scientific.net/AMR.148-149.544

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Study on Influences of Thickness of Flange of U Rib on Mechanical Behaviors of Orthotropic Monolithic Steel Bridge Deck System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.122 ◽

2010 ◽

Vol 163-167 ◽

pp. 122-126 ◽

Cited By ~ 1

Author(s):

Ru Deng Luo ◽

Mei Xin Ye ◽

Ye Zhi Zhang

Keyword(s):

Finite Element Analysis ◽

Yangtze River ◽

High Speed ◽

Bridge Deck ◽

Steel Bridges ◽

Engineering Practice ◽

Steel Bridge ◽

Mechanical Behaviors ◽

Element Analysis ◽

High Speed Railway

Orthotropic monolithic steel bridge deck system stiffened by U rib is very fit for high-speed railway steel bridges because of its excellent mechanical behaviors. Thickness of flange is a very important parameter of U rib and has influence on mechanical behaviors of orthotropic monolithic steel bridge deck system. Based on the engineering practice of Anqing Yangtze River Railway Grand Bridge, the kind and the extents of influences of thickness of flange of U rib on mechanical behaviors of orthotropic monolithic steel bridge deck system are studied with finite element analysis. The results show that thickness of flange of U rib has relative large positive influences on rigidity, strength and stability of orthotropic monolithic steel bridge deck system. 14~18mm is the appropriate range of thickness of flange of U rib for high-speed railway steel bridges.

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